Those the words might not mean much to any but the geekiest of us — but this is a big deal.

Creative Commons was a early adopter of Semantic Web standards. And yet, while the Semantic Web provided RDF as a standard for expressing metadata, it did not provide a standard for how that metadata should be integrated into ordinary Web pages.

The original concept of the Semantic Web did not encompass the notion that ordinary Web pages would be augmented with machine-readable metadata. Even today, that notion remains controversial. One considerable faction still holds that HTML should be purely a formatting language with no provision for any semantic information at all. Other factions, like microformats community, advocate metadata standards that do not integrate well into RDF and general Semantic Web applications.

CC licensing was the first use of the Web to envision Web publishers augmenting their pages with small amounts of machine-readable markup: the CC licensing attributes. It was our desire achieve this consistently with the Semantic Web that led to our involvement with the Web standards community; and the need to advocate for such a standard was why CC joined the Web Consortium in the first place.

RDFa is the standard that has emerged from this effort. RDFa is a general mechanism for expressing machine-readable attributes on Web pages in a way that is integrates with HTML. The most obvious example for us is the Creative Commons Rights Expression language (ccREL) — a machine-readable way to express CC licensing.

W3C’s adoption today of the RDFa recommendation solidifies the technical underpinning of ccREL and opens the door to the development and widespread support for CC-compliant tools on the Web.

There are many people who deserve credit for RDFa. Mike Linksvayer and Nathan Yergler certainly get kudos for their consistent support and development of the CC infrastructure to emphasize RDFa and ccREL.

But the lion’s share of the credit goes to Ben Adida, CC’s W3C representative, who led this effort creatively and tirelessly. Ben’s leadership in the technical design of RDFa and the negotiations and refinements to bring RDFa all the way through the complex Web standards process has been an effort of more than five years.

This work on RDFa not only has major benefit to CC, but it’s a significant example CC providing technical leadership in Web community and a contribution that will have implications far beyond CC’s own applications.

Ben deserves our sincerest thanks and congratulations.

== Hal

(Also check out Hal’s starring role in the new Jesse Dylan video about Creative Commons, A Shared Culture.)

Congratulations and thanks to Ben and everyone else who has worked so hard on this effort for so many years.

Using RDFa, one can make data in web pages rendered for humans also readable in a meaningful way by computers. This is important to Creative Commons, as we have always seen the promise of the Semantic Web to describe licenses and make works more findable and reusable, ironically it has always been difficult to bring the Semantic Web to the World Wide Web we’re all used to using and loving. RDFa is a crucial bridge to bring these worlds together.

Creative Commons, primarily through the efforts of Ben Adida, our W3C Representative (see a recent interview with him at the Yahoo! Search Blog), has been a major contributor to the development of RDFa since 2004. I strongly suspect the standard would have taken more than four years without CC’s contributions.

You can read an in-depth description of some of the early CC use cases for RDFa in a paper we released earlier this year, including machine-readable attribution and description of images and other resources included in web pages.